# CISN vs TriviaMathUno

The clearest difference is in-app purchases: CISN at none against TriviaMathUno's 3. CISN also leads on iOS requirement (12.0 vs 17.0). TriviaMathUno's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. TriviaMathUno sells 3 in-app purchases, starting at $1.99 per month. CISN asks for nothing beyond the download.

CISN ships an update every 4 months, TriviaMathUno every 2 months. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CISN | TriviaMathUno |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 52 MB | 33 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BlueFrame Technology, LLC](https://appshunter.io/developer/1115903691) | [Alejandro Fuenzalida](https://appshunter.io/developer/1682823067) |

## What reviewers say

### CISN

[App page](https://appshunter.io/ios/app/cisn/id1550595689)

**Features:** macOS Compatibility

**In-app purchases:** none


### TriviaMathUno

[App page](https://appshunter.io/ios/app/triviamathuno/id6449136074)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscribers | $1.99 | per month |
| Premium Subscribers | $17.99 | per year |
| Premium Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is CISN free?

CISN is free to download, with no in-app purchases.

### Is TriviaMathUno free?

TriviaMathUno is free to download, with in-app purchases available.

### Do CISN or TriviaMathUno have ads?

CISN shows ads; TriviaMathUno does not.

### Which is updated more often, CISN or TriviaMathUno?

CISN ships an update every 4 months, and TriviaMathUno every 2 months. Most recently, CISN was updated on November 3, 2026 and TriviaMathUno on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*